State and local smoking bans are on the rise. Fourteen states enforce smoking bans that designate bars, restaurants, and workplaces as 'smoke free'. Many municipal ordinances also enforce smoking bans in many cities across America. So even if you don't live under a state ban you may still have to deal with a citywide ordinance.
Today's smokers have fewer places to 'lite up' but more options for a nicotine fix. E-cigarettes or Electronic Nicotine Delivery Systems (ENDS as I like to call them) are the best option available to the modern smoker, other than quitting that is and they can help you do that too.
You are allowed to 'vape' anywhere. I've never seen a 'No Vaping' sign and you probably won't either.
On the 'brass tacks' side an E-cigarette is nothing more than a portable vaporizer with three essential parts. A battery, an atomizer, and a cartridge or reservoir that holds a nicotine solution. The battery powers the atomizer which heats the reservoir and changes the nicotine solution into vapor.
Nicotine solutions usually contain water, glycol, nicotine, and flavoring. The user inhales the vapor and nicotine gets delivered to the lungs. Fast, effective, and tar free. Not healthy but healthier than cigarettes and smoke free. All you exhale is water vapor, the nicotine transfer in your lungs takes 3 seconds.
I've heard heavy smokers say that such a device could never satisfy their addiction, to which I say Bullshit. Vapor solutions are offered in a variety of strengths from 10mg to 36mg's of nicotine. The difference between the smoking and 'vaping' experience is the feel of it. Many smoker's I've known have complained that they can't 'feel' the device working.
It's not what they're feeling, it's what they're not feeling. When you smoke a cigarette you can 'feel' the smoke going into your lungs, E-cigarettes do not provide this sensation. Vapor does not 'feel' like smoke when you inhale it, in fact it doesn't feel like anything.
However if you can't live without this sensation (which is actually pain) you can try the 'Diablo Loco' solution from totallywicked-eliquid.com which provides a hot pepper sensation in the range of 500,000 SHU (Scoville Heat Units). You may want to try the 'Diablo Poco' first though, it only contains 5,000 SHU.
Nicotine is bad for you but tar, cyanide, and formaldehyde are much much worse.
Nicotine causes high blood pressure and vascular constriction but the cancer causing agents in cigarettes are tar, chemicals in the filter and chemicals used to cure the tobacco. With cigarettes you are inhaling burning plant matter which deposits carcinogens in your lungs. You smoke to feed a nicotine addiction but nicotine is the least harmful ingredient in a cigarette.
The ENDS justify the means, you can 'vape' in bars, restaurants, workplaces, you can even 'vape' while you sing in the shower like this guy.
Flavor your fix anyway you like, it's better for you than cigarettes and cheaper per puff. Healthier, cheaper, and convenient. Worth it.